Das xBoot Demo & review

Das xBoot sorts its bonuses by the Bonus symbol count: three give Silent Hunter Spins, where the third reel grows to eight rows, and four give Wolf Pack Spins, where launched torpedoes raise one win multiplier. Nolimit City released this original in September 2021, long before the sequel Das xBoot 2wei, with xBomb, xWays and xNudge on a six-reel grid and an Extreme volatility label. It is built for bonus buyers rather than base-game spinners.

The base game before our first spin, with the ways counter on 576. FluxPlays demo test, 1 November 2026.

How Das xBoot works

The grid has six reels of two, three, four, four, three and two rows, which the counter on our base screen showed as 576 ways. Wins pay on ways, and winning symbols collapse so new ones fall in. Three Nolimit City mechanics sit on top, and the Bonus symbols decide which round you get:

1. xWays symbols each reveal two or three of one symbol, adding ways. Several on one spin all show the same symbol.
2. xNudge Wilds stand four rows high and always nudge until fully in view, raising the Wild's multiplier by one with every nudge.
3. xBomb Wilds stand in for everything except Bonus symbols. They explode after a win, or start a new collapse when there is none, clear the symbols around them and add one to the win multiplier for the next collapse.
4. Three Bonus symbols start Silent Hunter Spins, and four start Wolf Pack Spins.

The two bonuses carry the game. Nolimit City's game sheet splits the RTP between the base game, 59.74%, and the free spins, 36.29%, so more than a third of the theoretical return sits in rounds a spinner reaches only now and then.

How the Das xBoot bonuses trigger

Three Bonus symbols give eight Silent Hunter Spins and four give eight Wolf Pack Spins. The game sheet puts free spins at about 1 in 211 spins and a win of 100x the bet at about 1 in 635.

Silent Hunter Spins

Reel 3 grows to eight rows for the whole round. A win that includes the Periscope Wild on that reel starts a torpedo launch sequence. If the torpedo hits its target, the Periscope Wild fills the reel from the top and nudges down to the bottom, adding a win multiplier for each nudge, and the win multiplier stays raised until the round ends. xBombs add a sticky win multiplier as well. On our screens the grown reel took the ways counter to 1,152.

Wolf Pack Spins

This round builds a torpedo instead. xWays Wild symbols load the torpedo bay, a meter under the reels, and once all four torpedo parts are in, a torpedo launches and the win multiplier goes up by one. Here too, xBombs award a sticky win multiplier that lasts to the final spin. In practice Silent Hunter is about one tall reel and one launch landing, and Wolf Pack about collecting toward repeated launches.

The buy panel at a 1.00 bet, with both submarine rounds on offer. FluxPlays demo test, 1 November 2026.

Bonus buy: prices and what you get

Nolimit City's page and game sheet give no separate RTP or volatility label for either buy, so those cells stay empty. The sheet also notes that the buy feature may be removed in some regulated markets.

RTP, volatility and max win

Das xBoot comes in two RTP versions, 96.03% and 94.04%, and the casino decides which one it runs. The lower version keeps about two more dollars of every hundred staked, in theory. Nolimit City rates the volatility Extreme, the word on the intro screen too.

The intro screen, with the three x-mechanics and the Extreme volatility label. FluxPlays demo test, 1 November 2026.

The max payout, which the game calls Das Gold Des Roter Teufel, is 55,200x the bet. Reaching it ends the round at once, and the game sheet puts it at about 1 in 64 million spins. One review site gives a higher cap, but the provider's sheet and game page agree on the figure above.

Our Das xBoot demo test

Two back-to-back spins made the base session. Spin 25 brought Silent Hunter Spins on its own, and spin 26 paid $12.80 straight after. Most of the other wins paid less than the stake, and everything after spin 30 added about four dollars.

Our natural Silent Hunter Spins from base spin 25 ended at 59.40. FluxPlays demo test, 1 November 2026.

In the natural round a mid-round screen showed stacked Wilds carrying an x3 multiplier on a six-way win. The bought Wolf Pack round filled its torpedo bay on screen with xWays and Wild counts, and two named multiplier banners appeared. Big Booty came first at x2. Lieutenant's Loot followed at x5, for a $96.00 step on 16 win ways. Our bought Silent Hunter round, by contrast, stayed small.

The Big Booty x2 step in our bought Wolf Pack Spins, with the round on 75.28. FluxPlays demo test, 1 November 2026.

Nothing on our screens showed a torpedo launch or an xBomb explosion clearly enough to name, so both come from Nolimit City's sheet. Three bonus rounds are far too few to rank the two bonuses, and the base session says nothing about the RTP.

Our bought Wolf Pack Spins ended at 171.28 on a 350 buy. FluxPlays demo test, 1 November 2026.

Is Das xBoot worth playing?

The bonuses, yes, as long as you buy them. The base game, no. The base spins are slow by design, with natural free spins rare by Nolimit City's own count, and our session showed that clearly. The two rounds are the opposite: different ideas, one a tall reel waiting for a torpedo to hit, the other a bay that keeps loading, and both able to add sticky multipliers from xBombs.

For us the cheaper round is the right start, and Wolf Pack the one to try once the torpedo bay makes sense.

Pick Fire in the Hole xBomb if you want xBombs in a base game that digs the grid open as it collapses, with a coin-collect bonus. Choose Das xBoot for two free spins rounds that play nothing alike.

In the demo, buy Silent Hunter Spins first and watch reel 3: the Periscope Wild on that tall reel is what the round turns on.